Solutions by everydaycalculation.com

1^{st} number: 21/30, 2^{nd} number: 1 17/18

2130 - 3518 is -5645.

- Find the least common denominator or LCM of the two denominators:

LCM of 30 and 18 is**90**

Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,

2130 = 21 × 330 × 3 = 6390 - Likewise, for the 2nd fraction, since 18 × 5 = 90,

3518 = 35 × 518 × 5 = 17590 - Subtract the two like fractions:

6390 - 17590 = 63 - 17590 = -11290 - After reducing the fraction, the answer is -5645

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